Cemented shoe



March 31, 1936. c. 2,036,065

CEMENTED SHOE Filed Nov. 27, 1935 INVEN TOR CHARLES MiLLER ATTORNEYPatented Mar. 31, 1936 UNITED STATES PATENT OFFICE a Claims.

This invention relates to cemented shoes. When shoes having straps asparts of the upper have been made under the cemented shoe processes ofthe prior art, considerable difliculty 5 has been experienced inproperly cementing the outsole at those portions where the said strapsare lasted to the insole.

It is therefore an object of this invention to devise a method, ofmaking cemented shoes hav- 1 ing straps as a part of the upper thereof,in which the outersole is uniformly cemented to the shoe.

Also, it is an object of this invention to improve the shank structureof a shoe having a metallic shank stiffener, particularly with regard tothe attachment of the outsole at this portion. And it is a furtherobject of this invention to prepare an outsole for use in a cementedshoe so that the same may be firmly attached to the 2 shoe, and permitof a finished product having all the outward appearances of a turnedshoe.

It is another object of this invention to improve the mounting of theshank stiffener in a cemented shoe.

Finally, it is an object of this invention generally to improve thecemented shoe art and to produce cemented shoes which are durable, andstylish and which have all'the desirable characteristics of turnedshoes.

These and other objects of the invention will be readily apparent tothose skilled in the art from the following description taken inconjunction with the accompanying drawing in which:

Fig. l is a perspective view of a shoe partially completed, the outsolebeing omitted.

Fig. 2 is a perspective view of an outsole prepared for attachment tothe shoe shown in Fig. 1.

Fig. 3 is a sectional view taken along the line 3-3 of Fig. 1.

Fig. 4 is a sectional view taken along the line 4 l of Fig. 2.

Fig. 5 is a detail view of a shank stiffener having a covering.

The present invention is disclosed specifically as applied to aso-called Sbicca method shoe, such as is disclosed in U. S. LettersPatent 1,838,- 708 issued to Frank Sbicca and U. S. Letters Patent1,902,725 issued to the same inventor. However, it must be strictlyunderstood that the present invention is not so limited and that thesame may also be applied to any cemented shoe in which separate insoleand outsole members or their equivalents are used.

Referring in detail to the drawing the shoe Ill having an upper l Iprovided with strap members l2 forming a part of the vamp, and strapmembers l3 forming a part of the quarters and counter section, is lastedto the insole M, which has previously been mounted upon the last I5shown in dotted lines in Fig. 1. This insole I4 is provided with a randMa forming the forward portion, a shank portion Mb and a heel portion14c. Mounted upon the shank portion Mb by tacks I5 is a shank stiffenerl'l having an arcuate section I8 running lengthwise thereof. A fabricsheath or covering l9 surrounds the stiffener l1. Preformed wedge shapedstrips of leather are cemented to the shank portion with one edgeabutting the stiifener. The strips 2!) abut against the stiffener andextend from a point adjacent to the heel breast down to the end of thestiffener. The thin edge of the strips runs a little inside of the sideedges of the shank portion as shown in Figs. 1 and 4. These stripstogether with the stiffener H and its sheath I8 form a substantiallyconvex surface on the shank portion of the insole. The sheath, after itis mounted upon the stifiener is saturated with a cement having acellulose nitrate base and which readily becomes tacky upon theapplication of a suitable solvent.

Referring now to Fig. 1, it will be seen that the spaces between thestraps [2 are free of the upper of the shoe. Consequently when theoutsole is attached, it must be cemented to the insole member Ma. at theintermediate points, but the edges of the straps which come in contactwith the sole will keep the same out of contact with the insole memberMa at the said intermediate parts. This not only results in an unsightlyshoe, but the same is substantially weaker due to the incompletecementing of the outsole. To overcome this defect, small leather wedges,22 substantially triangular in shape are inserted between the edge ofthe last and the rand Ma, (Fig. 1). These wedges 22 are just wide enoughto fit in between the straps l2 and are as thick as the straps I2. Now,when the outsole is placed on the shoe, and pressure is applied tocement the same in place, the leather wedges 22 bring the rand Ha intocontact with the outsole, and permit these portions to be cemented tothe outsole. Of course, for difierent styles of the upper the spacebetween the straps will vary, and the wedges 22 are prepared to lit theparticular shoe in which they are to be used. Upon completion of theshoe, and withdrawal of the last, the Wedges fall out, and may either beused again or thrown away.

The heel seat 40 is filled with a composition of sawdust and cement. Thefilling is leveled off flush with the inturned edges of the upper in theheel seat lasting. This cement is of the above mentioned type andhardens to form a firm foundation for the mounting of the heel.

The shoe is now ready for the application of the outsole which is firstprepared as follows:

The properly shaped outsole member 30, having a raised ball section 3|as described in the aforementioned Sbicca patents, is grooved at 32 toreceive the shank stiffener I1 mounted on the insole, and to embrace thesame firmly when the outsole is pressed onto the shoe. Along the edge ofthe shank portion of the outsole on both sides thereof there areprovided bevelled edges 33, concave in cross action and extendingsubstantially from the ball line to the heel breast. The edge of thisbevel is colored the same as the upper of the shoe to which it is to beapplied. The sole is now coated over those portions which are to contactwith the lasted edge of the upper, the edge of the rand, and the shankportion of the insole with a cement such as is now commonly used incemented shoes, and the cement is allowed to dry.

Before the sole is layed, the cemented surface is made tacky, followingwhich the sole is put in place upon the shoe, and pressure is applied tofix the same properly in position.

The pressure applied to the outsole brings the same firmly into contactwith the lasted edge of the upper as well as the edge of the rand Mb andwhere the upper is cut away, between the straps, the insole is cementedto the outsole, due to the use of the wedges 22. Also, the shank portionof the outsole is pressed onto the convex surface formed by the shankstiffener I1 and the strips 20, with the crown of this surface fittinginto the groove 32. The adhesive forms a solid union, and the sheath I9sticks to the groove. With the outsole in place the shank portion of theouter sole is pressed into a substantially convex surface, and the edgesof this section taper down and merge into the edge of the shank portionof the insole. This insures a well defined narrow edge at the shank,which is a highly desirable characteristic of a well made shoe. Thiseffect is further emphasized by the fact that the edge of the outsole iscolored to match the upper thus detracting from the apparent thicknessof the outsole of the shank. It will be understood that the degree ofcurvature of the convex surface on the shank portion of the outersole isless than that of the surface to which it is attached, due in the main,to the groove 32.

After the sole is layed, the heel is attached, and the finishingoperations are performed in the usual manner.

It will be understood that many changes in the herein disclosed specificembodiment of this invention will suggest themselves to those skilled inthe art, which changes are not a departure from the spirit and scope ofthis invention. I therefore do not intend to be limited in the scope ofthis invention except as defined in the appended claims.

Having thus described my invention I claim:

1. In a shoe, an insole having forward, shank, and heel sections, ashank stiffener mounted upon said shank section, pre-formed wedgemembers comprising strips of sheet material mounted upon said shanksection in abutting relation to said stiffener and extendinglongitudinally of the latter, and an outsole attached to said insole.

2. In a shoe, an insole having forward, shank, and heel sections, ashank stiffener mounted upon said shank section, individual wedgemembers comprising strips of sheet material mounted upon said shanksection in abutting relations to said stiffener, and extending from saidheel section to said forward section.

3. In a shoe, an insole having forward, shank, and heel sections, ashank stiffener mounted upon said shank section, pre-formed wedgemembers comprising strips of sheet material mounted upon said shanksection in abutting relation to said stiffener, said wedge membersextending longitudinally of the stiffener and forming with the stiffenera substantially convex surface at the shank section of the shoe, and anoutsole attached to said insole.

4. In a shoe, an insole having forward, shank, and heel sections, ashank stiffener mounted upon said shank section, said stiffener beingprovided with a sheath, pre-formed wedge members mounted on said shanksection adjacent said stiffener, said wedge members comprising strips ofsheet material extending longitudinally of the stiffener and formingwith the stiffener a substantially convex surface at the shank sebtionof the shoe, and an outsole cemented to said insole to the sheath ofshank stiffener and to said strips of sheet material.

5. In a shoe, an insole having forward, shank and heel sections, a shankstiffener mounted upon said shank section, pre-formed wedge memberscomprising strips of sheet material mounted upon said shank section inabutting relation to said stiffener, and an outsole attached to saidinsole, said outsole being provided with a groove to receive saidstiffener.

6. In a shoe, an insole having forward, shank and heel sections, a shankstiffener mounted upon said shank section, pre-formed wedge memberscomprising strips of sheet material mounted upon said shank section inabutting relation to said stiffener, and an outsole attached to saidinsole, said outsole having a shank section the side edges of which havea concave bevel.

'7. In a shoe, an insole having forward, shank and heel sections, ashank stiffener mounted upon said shank section, pre-formed wedgemembers comprising strips of sheet material mounted upon said shanksection in abutting relation to said stiffener, and an outsole attachedto said insole, said outsole having a shank section the side edges ofwhich have a concave bevel, colored to match the upper of the shoe.

8. In a shoe, an insole having forward, shank. and heel sections, ashank stiffener mounted upon said shank section and extending above thesurface thereof, an outsole overlying said stiffener and spaced therebyfrom the surface of said insole shank section, and pre-formed meanscomprising strips of sheet material located in and substantially fillingthe space between said outsole and said insole shank section, saidoutsole being cemented to said strips.

9. In a shoe having an upper, an insole member having a shank section, ashank stiffener mounted upon said shank section, an outsole overlyingsaid stiffener and spaced thereby from the surface of said insole shanksection, and strips of leather extending longitudinally of said shanksection between the latter and said outsole on opposite sides of saidshank stiffener.

10. In a shoe having an upper, an insole member having a shank section,a shank stiffener mounted upon said shank section, an outsole overlyingsaid stiffener and spaced thereby from the surface of said insole shanksection, and wedge members comprising strips of leather extendinglongitudinally of said shank section between the latter and said outsoleon opposite sides of said shank stiffener, said outsole being cementedto said strips.

CHARLES MILLER.

